$OpenBSD: patch-src_xfns_c,v 1.1 2011/07/08 20:36:09 naddy Exp $

Fix build with png-1.5.

--- src/xfns.c.orig	Mon Jul  4 17:41:10 2011
+++ src/xfns.c	Mon Jul  4 17:41:40 2011
@@ -8541,7 +8541,7 @@ my_png_error (png_ptr, msg)
 {
   xassert (png_ptr != NULL);
   image_error ("PNG error: %s", build_string (msg), Qnil);
-  longjmp (png_ptr->jmpbuf, 1);
+  png_longjmp (png_ptr, 1);
 }
 
 
@@ -8699,7 +8699,7 @@ png_load (f, img)
 
   /* Set error jump-back.  We come back here when the PNG library
      detects an error.  */
-  if (setjmp (png_ptr->jmpbuf))
+  if (setjmp (png_jmpbuf(png_ptr)))
     {
     error:
       if (png_ptr)
